Oxygen reduction reaction on Pt-based electrocatalysts: Four-electron vs. two-electron pathway

Zhang, Lili; Jiang, Suyu; Ma, Wei; Zhou, Zhen

doi:10.1016/s1872-2067(21)63961-x

Cited by 58 publications

(33 citation statements)

References 94 publications

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“…These characteristics are established by several dynamic processes (kinetic, mixed kinetic-diffusion or diffusion). To evaluate the ORR efficiency, the mass/specific current at relatively high potential is typically used [18,19].…”

Section: Introductionmentioning

confidence: 99%

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Nitrogen doped carbonaceous materials as platinum free cathode electrocatalysts for oxygen reduction reaction (ORR)

Ayyubov

Tálas

Berghian‐Grosan

et al. 2022

Reac Kinet Mech Cat

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Comparison of physicochemical properties and electrocatalytic behavior of different N-doped carbonaceous materials as potential catalysts for oxygen reduction reaction (ORR) was attended. Ball-milling of graphite with melamine and solvothermal treatment of graphite oxide, graphene nanoplatelets (GNP) with ammonia were used as preparation methods. Elemental analysis and N2 physisorption measurements revealed the synthesis of N-doped materials with strongly different morphological parameters. Contact angle measurements proved that all three samples had good wettability properties. According to analysis of XRD data and Raman spectra a higher nitrogen concentration corresponded to a smaller size of crystallites of the N-doped carbonaceous material. Surface total N content determined by XPS and bulk N content assessed by elemental analysis were close, indicating homogenous inclusion of N in all samples. Rotating disc electrode tests showed that these N-doped materials weremuch less active in acidic medium than in an alkaline environment. Although the presence of in-plane N species is regarded to be advantageous for the ORR activity, no particular correlation was found in these systems with any type of N species. According to Koutecky–Levich analysis, both the N-containing carbonaceous materials and the reference Pt/C catalyst displayed a typical one-step, four-electron ORR route. Both ball-milled sample with high N-content but with low SSA and solvothermally synthesized N-GNP with high SSA but low N content showed significant ORR activity. It could be concluded that beside the total N content other parameters such as SSA, pore structure, structural defects, wettability were also essential for achieving high ORR activity.

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Section: Introductionmentioning

confidence: 99%

“…It is critically needed to use high-performance catalysts. However, the most active commercial Pt/C catalysts are expensive and suffer from low reserves [18,[22][23][24]. It would be desirable to use widely available and inexpensive platinum-free catalysts as electrocatalysts for ORR [25,26].…”

Section: Introductionmentioning

confidence: 99%

Nitrogen doped carbonaceous materials as platinum free cathode electrocatalysts for oxygen reduction reaction (ORR)

Ayyubov

Tálas

Berghian‐Grosan

et al. 2022

Reac Kinet Mech Cat

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“…1). [5][6][7] In short, green hydrogen is an irreplaceable part of the development of sustainable energy in the future.…”

Section: Xueyuan Zhangmentioning

confidence: 99%

Advanced Pt-based electrocatalysts for the hydrogen evolution reaction in alkaline medium

Ma,

Zhang,

et al. 2023

Nanoscale

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“…With the development from metal–O 2 to metal–CO 2 battery, the discharge products have been found to change over different electrocatalysts. In the metal–O 2 battery, the discharge products can vary from H 2 O to H 2 O 2 with different catalysts, while the discharge products change from carbon and carbonate to oxalate and carbon monoxide with distinct catalysts for the Li–CO 2 battery. , The aqueous Zn–CO 2 battery can generate carbon monoxide, formic acid, and methane based on the proton-coupled electron-transfer mechanism when constructed from diverse catalysts. − Subsequently, the metal-catalysis battery has been reported to be an efficient strategy for highly selective chemical production. In this system, the catalyst cathode, metal anode, and electrolyte can be modified to obtain various chemicals beyond H species and C species.…”

Section: Introductionmentioning

confidence: 99%

Development, Essence, and Application of a Metal-Catalysis Battery

et al. 2023

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Metrics & MoreArticle Recommendations CONSPECTUS: In the pursuit of maximizing the energy supply and sustainable energy development, high-energy-density energy storage systems beyond lithium-ion batteries are surging. The metal-catalysis battery, composed of a metal anode, electrolyte, and redox-coupled electrocatalyst cathode with gas, liquid, or solid as active reactants, is regarded as a promising energy storage and conversion system due to its dual functions of energy storage and chemical production. In this system, with the assistance of a redox-coupled catalyst, during discharging, the reduction potential energy of the metal anode is converted into chemicals along with electrical energy generation, while the external electrical energy is translated to the reduction potential energy of the metal anode and the oxidation potential energy of the reactants during charging. In this loop, the electrical energy and sometimes chemicals can be generated simultaneously. Although intensive effort has been devoted to the exploration of redox-coupled catalysts, the essence of the metalcatalysis battery, which is the prerequisite for further development and application, has been overlooked.In this Account, we present the journey of the metal-catalysis battery from development to essence and application and propose that the metal-catalysis battery system, which combines energy storage and electrocatalytic redox reactions with the characteristics of temporal decoupling and spatial coupling and an energy-conversion paradigm from electrical energy to chemicals via electrochemical energy storage, is achieved. First, inspired by the Zn−air/Li−air battery, we developed and realized Li−CO 2 /Zn−CO 2 batteries and enriched the functions of the metal-catalysis battery from energy storage to chemical production. Based on OER/ORR and OER/CDRR catalysts, we have further explored OER/NO 3 − RR and HzOR/HER coupled catalysts and developed Zn−nitrate and Zn−hydrazine batteries. By extending the redox-coupled electrocatalyst systems from O, C species to N species and others, the metal-catalysis battery systems would develop from metal−O x , C x to metal−N x and other batteries. Then, from Zn−CO 2 and Zn−hydrazine batteries, we found that the overall reaction is decoupled into two separate reduction and oxidation reactions via the cathodic discharge and charge processes, and we further extracted the essence of the metal-catalysis battery, namely, the temporal-decouple and spatialcouple (TD-SC) mechanism, which is completely opposite to the conventional temporal couple and spatial decouple in electrochemical water splitting. Based on the TD-SC mechanism, we developed various applications of metal-catalysis batteries for the green and efficient synthesis of fine chemicals by modifying the metal anode and redox-coupled catalysts and electrolytes, including the Li−N 2 /H 2 battery for NH 3 synthesis and the organic Li−N 2 battery for fine chemical synthesis. Finally, the main challenges and the possible opportunities for the metal-catalysis ba...

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Oxygen reduction reaction on Pt-based electrocatalysts: Four-electron vs. two-electron pathway

Cited by 58 publications

References 94 publications

Nitrogen doped carbonaceous materials as platinum free cathode electrocatalysts for oxygen reduction reaction (ORR)

Nitrogen doped carbonaceous materials as platinum free cathode electrocatalysts for oxygen reduction reaction (ORR)

Advanced Pt-based electrocatalysts for the hydrogen evolution reaction in alkaline medium

Development, Essence, and Application of a Metal-Catalysis Battery

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